Alpha1 Capricorni
- For other star systems with this Bayer designation, see Alpha Capricorni.
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Capricornus |
| Right ascension | 20h 17m 38.9s |
| Declination | −12° 30′ 30″ |
| Apparent magnitude (V) | +4.30/+8.5 |
| Distance | 690 ± 140 ly (211 ± 43 pc) |
| Spectral type | G3 Ib[1] |
| Other designations | |
Alpha1 Capricorni (α1 Cap, α1 Capricorni) is a double star in the southern constellation of Capricornus. It also has the traditional star name Prima Giedi or Algiedi Prima, and shares the name Algedi (from الجدي - al-jadii, meaning the goat) with α² Capricorni. It is approximately 690 light years from Earth.[2]
This is a yellow G-type supergiant with an apparent magnitude of +4.30. This star has 5.3 times the mass of the Sun and is radiating around 1,047 times the Sun's luminosity.[1] It has an 8th magnitude companion, separated by 0.65 arcseconds from the primary.
In popular culture
The name Giedi Prime is used for a fictional planet in Frank Herbert's 1965 science fiction novel Dune. The planet Giedi Prime is known to be the home planet of the Harkonnens.[citation needed]
References
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